| Impact ID |
Scientific Name
|
Impact Type
|
Study Type
|
Study Location
|
Impact Description
|
Geographic Location
|
Reference
|
|
3168
|
Egeria densa
|
Competition
|
Anecdotal
|
Field
|
Egeria densa populations in Siltcoos Lake, Oregon grew with the rare Ceratophyllum echinatum.
|
|
10741
|
|
6987
|
Egeria densa
|
Competition
|
Observational
|
Field
|
In the Duck Lake waterways of Washington state, within a matter of three years, stonewart (Nitella spp.), native elodea, and pondweed (Potamogeton natans) were displaced completely by thick dense mats of Egeria densa.
|
Duck Lake, Washington
|
42092
|
|
6988
|
Egeria densa
|
Competition
|
Observational
|
Field
|
Egeria densa may have the potential to compete with native species. In the Hawkesbury-Negean River, increased spread of E. densa resulted in the displacement and reduced abundance of the native vallisneria Vallisneria americana. It is suspected that competition for light is responsible for the decline in vallisneria, and that floods are responsible for the rapid spread of E. densa.
|
Hawkesbury-Nepean River, Australia
|
42093
|